1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc481eaa1be2c80a4ada496bf8f49f5da5ef58c6cf97df1029969f693db363bf0. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27deaa8a-169e-4148-82ea-5714f8a63d94.json and https://artists.proofprofile.net/proofs/artist/27deaa8a-169e-4148-82ea-5714f8a63d94.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdff14b8b4568057ea90247dd83fddd62be876302ba1e23d607eee901dd152e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC011933162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7279b333b833dde6615f807c2d08730535d50135927a7fe9e778b8565efd1661. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC012134352.
Don Pepito Y Don José (Hola, Don Pepito)
La Vaca Lola Y Las 30 Mejores Canciones Infantiles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf640b0b8dde9964cb771ec5bfdbd9537eecb076514ff6aedbb684517b77a22. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC011732107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b5cfd7c87688f154fe0392ffb28b46d2098ad966b0a5d71774cc42030b27bd. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC012034089.
Las Mejores Canciones Infantiles Cantiaventuras
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a5bc5a2d54900cfd9019ec5af07365936957320153ce17464ee1794e745969. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC011732431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7a4c7b5472cc1920bebb50b9286baa291708cfd4abf41907ccb6fceba44af8. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:41:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC012033584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf4c2e89b9bca4c65369d78b6c5f329ca599f9fa0f3c4f384a1a5a4d3bc170b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC012033529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0ec8d893dbe8728d67ea9e58328a98d1de86b93e97d671af518c1fd09094f7. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC012338300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfa1015ad9f66025095f57718ae9afee02035830cb59089b188a6537a590cba. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC012441805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf643550460ffe843427f223c48fc10d5c66ed94ae42366ac481ea25db78e694f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC012442149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f18a74d9c5702a7d97b33c849267c146e3702d748c18918c305535f81ecd22. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC012442154.
Barquito De Sueños (Canciones De La Pachamama)
Es Hora De Dormir (Canciones De La Pachamama)
La Danza De Los Sapitos (Canciones De La Pachamama)
Jardinera De Sonrisas (Canciones De La Pachamama)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa726402c166c833c7b940f53a77bcf7335dfb37796f58192336bb3314481acc. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC012545014.